EXT4-fs (loop0): dirty_blocks=32
EXT4-fs (loop0): Block reservation details
EXT4-fs (loop0): i_reserved_data_blocks=2
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2809!
Oops: inv[  239.402694][ T7518] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 7518 Comm: syz.0.246 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2808
Code: c6 e0 2f fe 8a e8 20 ea ba fe 90 0f 0b e8 68 0f 52 ff 4c 89 f7 48 c7 c6 c0 33 fe 8a e8 09 ea ba fe 90 0f 0b e8 51 0f 52 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000c89efc0 EFLAGS: 00010283
RAX: ffffffff826caeaf RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000dd12000 RSI: 000000000000071b RDI: 000000000000071c
RBP: ffffc9000c89f3f0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100bd3fd5e R12: 0000000000000001
R13: ffffc9000c89f440 R14: 0000004000000000 R15: dffffc0000000000
FS:  00007f287a50e6c0(0000) GS:ffff888126dfc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f311e8b2000 CR3: 0000000037ab6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x205/0x350 fs/ext4/inode.c:3025
 do_writepages+0x32e/0x550 mm/page-writeback.c:2604
 filemap_fdatawrite_wbc mm/filemap.c:389 [inline]
 __filemap_fdatawrite_range mm/filemap.c:422 [inline]
 __filemap_fdatawrite mm/filemap.c:428 [inline]
 filemap_flush+0x194/0x230 mm/filemap.c:473
 ext4_rename fs/ext4/namei.c:3868 [inline]
 ext4_rename2+0xeab/0x2f50 fs/ext4/namei.c:4208
 vfs_rename+0xb34/0xe80 fs/namei.c:5216
 do_renameat2+0x6a2/0xa50 fs/namei.c:5364
 __do_sys_renameat2 fs/namei.c:5398 [inline]
 __se_sys_renameat2 fs/namei.c:5395 [inline]
 __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5395
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f287c2aefc9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f287a50e038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f287c505fa0 RCX: 00007f287c2aefc9
RDX: ffffffffffffff9c RSI: 0000200000000580 RDI: ffffffffffffff9c
RBP: 00007f287c331f91 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000005c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f287c506038 R14: 00007f287c505fa0 R15: 00007ffc81606b68
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2808
Code: c6 e0 2f fe 8a e8 20 ea ba fe 90 0f 0b e8 68 0f 52 ff 4c 89 f7 48 c7 c6 c0 33 fe 8a e8 09 ea ba fe 90 0f 0b e8 51 0f 52 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000c89efc0 EFLAGS: 00010283
RAX: ffffffff826caeaf RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000dd12000 RSI: 000000000000071b RDI: 000000000000071c
RBP: ffffc9000c89f3f0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100bd3fd5e R12: 0000000000000001
R13: ffffc9000c89f440 R14: 0000004000000000 R15: dffffc0000000000
FS:  00007f287a50e6c0(0000) GS:ffff888126dfc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f311e9de000 CR3: 0000000037ab6000 CR4: 00000000003526f0